<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    #bx_p{color : blueviolet}
    .c1{color :blue}
    h1,#bx_p,.c1{background-color:yellow }
    input[type="text"]{color: yellowgreen}
    input[type="password"]{color: salmon}
    *{border : 1px solid firebrick}
  </style>
</head>
<body>
<input type="text">
<input type="password">
<h1>这是刘思甜烂白菜</h1>
<p id="bx_p"> 冰箱</p>
<p class="c1">洗衣机</p>
<div>香蕉</div>
<div class="c1">苹果</div>
</body>
</html>